RED-V Super Digital Signage System RXV-A740R Exposure Scanner

The RED-V Super Digital Signage System RXV-A740R is widely used for display solutions in advertising and information dissemination across public venues such as shopping malls, airports, and train stations. It is favored by companies looking for robust digital signage capabilities due to its reliability and rich multimedia support. The software facilitates dynamic content management, scheduling, and remote updates, making it suitable for diverse and complex networked environments. By integrating various media formats and supporting live content streaming, this system ensures businesses can broadcast engaging, real-time information. It is primarily employed by marketing departments, public service sectors, and event management companies to grab attention and convey messages effectively. The system's versatility and stability make it a popular choice for those requiring continuous operation and centralized control over their digital displays.

The vulnerability in question pertains to the system's exposure of log information, which can be sensitive in nature. Log files are critical for diagnosing issues, tracking user interactions, and auditing security-related events. However, if these logs are exposed, they may reveal sensitive information such as system configurations, user data, and internal network activity. The detected vulnerability relates to an unauthenticated ability to access these logs, potentially leaking confidential data. Malicious actors exploiting this vulnerability can scrape detailed system information or injections, potentially leading to further system compromise. Regular audit and controlled access mechanisms are essential to prevent unauthorized exposure. It emphasizes the necessity of securing endpoints and restricting log file access to prevent abuse.

In technical terms, this vulnerability is centered around improperly secured endpoints that disclose log files when accessed. The specific endpoint susceptible to access in this vulnerability is `/downloader.log`, which potentially contains verbose logs about the system's status and debugging information. The exposure occurs because of inadequate access controls on this endpoint, allowing anyone with network access to retrieve these logs without authentication. The logs are likely stored in plain text and contain markers such as "Log file", "[LogParser]", and "[INFO]", indicating debug and system information. This information could be leveraged by attackers to refine attacks or exfiltrate sensitive data. Implementing stringent access control measures and encrypting sensitive logs is recommended to mitigate such vulnerabilities.

When exploited, this vulnerability might result in various adverse effects including but not limited to unauthorized access to sensitive data, system status, and debug information. This information could be used to craft more sophisticated attacks against the system or to identify weaknesses within the network architecture. Attackers may also gain insights into the operational parameters of the digital signage system, which can be exploited for denial of service attacks, unauthorized data modification, or false messaging on the digital displays. Furthermore, the exposure of logs can contribute to data breaches, potentially leading to reputational damage and financial loss for the business using the system.

REFERENCES

• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5609.php